Just watched an old episode of Barney Miller (“Hash”) and I recognized one of the police officers as “Officer Kirk” from “Happy Days” - but when I looked him up to confirm, I saw he was also “Colonel Fellini” who captured Kirk in “Tomorrow is Yesterday.”
Riverboat, the Darren McGavin 1959 TV series. Ken Lynch, the mining engineer from Devil in the Dark, plays a crook who has taken over Hampton, Mississippi.
The name of Darren McGavin’s riverboat was Enterprise.
Janos Prohaska played the horta in* Devil In the Dark*, the “Anthropoid Ape” in The Cage, the Mogato in A Private Little War and the rock thing in Savage Curtain. I just watched him play a killer chimp in Riverboat, Do No Evil. He also played a hornless mugato in a Voyage to the Bottom of the Sea episode.
This guy specialized in wearing ape suits.
Corey really got around in Sixties Westerns; he was in True Grit, Little Big Man and Butch Cassidy and the Sundance Kid.
http://www.aveleyman.com/Gallery/ActorsC/3631-20088.gif
He was also an early acting coach of Leonard Nimoy’s.
The 1995 sci-fi flick “Dgital Man” features Ken Olandt, who played Picards ersatz son. Also, Ed Lauter, who played the father of the boy killed when Wesley and co did that risky stunt in “The First Duty”. But draws the prize for a pre DS9 Chase Masterson, who briefly displays her, er, attributes. (It was the highlight of the film, in case you’re wondering.)
Just spotted a very young Ricardo Montalban in the WWII action movie Battleground (1949): http://photos1.blogger.com/blogger/2088/2881/1600/Image17.19.jpg
Amazingly, I don’t think it’s been mentioned that Warren Stevens played both Rojan in “By Any Other Name” and Lt “Doc” Ostrow in Forbidden Planet. He was that picture’s “Dr McCoy” to Leslie Nielsen’s “Captain Kirk” (JJ Adams).
Looking at the movie’s cast list, I see other Trek alumni were featured as well:
One of my favorite films, and suggested by some to be “the first Star Trek episode”.
It was definitely one of Roddenberry’s inspirations for Star Trek. If you didn’t already know, you might have trouble guessing which came first, Forbidden Planet or “The Cage.”
I just saw Vash in a commercial for Edward Jones. I hadn’t seen her in anything recent - although older, she’s still completely recognizable.
Some Fun Facts I had no inkling of until I started reading the MA entry for “By Any Other Name”:
Julie Cobb, who plays the yeoman reduced to a plaster block and then crushed by the Kelvans, was the only **Redskirt **killed on TOS. She was the daughter of Lee J Cobb, and it was her first professional gig. It’s apparent from her filmography that she’s really gotten around since:
Turns out she was also married to this guy, whose name might ring a bell:
Whaddaya know, he and I attended the same college! 
***First Contact **and Enterprise! With the exception of Kelly’s, Nimoy’s, and Doohan’s guest appearances on TNG, has any other actor appeared in the same role in more than one iteration of Star Trek? (Diana Muldaur doesn’t count, since she played multiple roles.)
*I just remembered the Klingons on DS9: Campbell, Ansara, Colicos, and Brill. Was there anyone else?
Of course, there’s the crossover between TOS and TNG in Generations: Shatner, Doohan, and Koenig.
And in TAS: Shatner, Nimoy, Doohan, Takei, Nichols, and Barrett, plus Lenard, Adams, and Carmel. Anyone else?
The Captain, First Officer and Doctor. A typical Star Trek plot-the ship is set to evacuate the survivors of an expedition, and they don’t want to leave. ^:dubious:^
And let us not forget, “What’s a bathing suit?”
or
“And then I’ll put more guards in the guards!”
I forgot until I saw his picture that he was also in one of my favorite sf B-movies, The Hidden, about a body-hopping alien criminal on the run in L.A.
I remember when she was on Trek I recognized her from some commercial, maybe even more than one.
Mark Lenard also showed up on TNG, reprising as Sarek.
, And Meany and Dorn were in DS9. Some of the Ferengi from ***TNG ***too?
John de Lancie brought his Q act from TNG to DS9 to VOYAGER.